/* * Copyright (c) 1988 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that: (1) source distributions retain this entire copyright * notice and comment, and (2) distributions including binaries display * the following acknowledgement: ``This product includes software * developed by the University of California, Berkeley and its contributors'' * in the documentation or other materials provided with the distribution * and in all advertising materials mentioning features or use of this * software. Neither the name of the University nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)logout.c 5.5 (Berkeley) 6/1/90"; #endif /* LIBC_SCCS and not lint */ #include <sys/types.h> #include <sys/file.h> #include <sys/time.h> #include <utmp.h> typedef struct utmp UTMP; logout(line) register char *line; { register int fd; UTMP ut; int rval; off_t lseek(); time_t time(); if ((fd = open(_PATH_UTMP, O_RDWR)) < 0) return(0); rval = 0; while (read(fd, (char *)&ut, sizeof(UTMP)) == sizeof(UTMP)) { if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE)) continue; bzero(ut.ut_name, UT_NAMESIZE); bzero(ut.ut_host, UT_HOSTSIZE); (void)time(&ut.ut_time); (void)lseek(fd, -(long)sizeof(UTMP), L_INCR); (void)write(fd, (char *)&ut, sizeof(UTMP)); rval = 1; } (void)close(fd); return(rval); }